SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9493d2aff27bbc27327539ec6367664d61f51f1b0f47c0b3c620f30177497ef7' 
  AND token = 'SOZCvS/NnCYXJXEjS5mvOB3j+ziuZ0pWGoqhBgHfFkU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}